Yeah, somebody go outside if you have a 5.0 that still has an EGR valve..
Start the car.. and see if the vacuum line on your EGR Valve, has any kind of vacuum at idle.
Shut car off, go back inside, and Let me know if it does :D
Mine does, but i was told it shouldnt..
Fox/n.
1. wild animal : a carnivorous animal of the dog family that has a sturdy square body, large cubic inches, a wide RPM range , and comes in many colors. Foxes are found throughout most of the world and hunt alone, mainly at night, relying on cunning and an acute sense of power and acceleration. They feed on mostly small rodents like rats(BBC) , mice (SBC) and snakes(Cobras).
I don't have a 5.0 here but can tell you that if the valve has vacuum drawing on it at idle the EGR will try to open at idle and it will idle like poop if at all. If you put your fingers under the valve and pull up the diaphragm while idling it should stall the car. So the vacuum should do the same thing. It is supposed to only work at part throttle IIRC.
Mark
LeMans Blue Z06
X2 what Mark said. I also don't have a 5,0, but know on a 2.3 it will basically stall it if you push the diaphram at idle. It will open with vacuum.
The EGR is onlt intended to introduce exhaust back into the intake tract during part throttle conditions for better economy / emisssions. It should be inactive at idle and WOT.
Remove the line, plug it, then take it for a drive.
Bob Myers
http://www.asashop.org/autoinc/dec97/egr.htm
It should stall at idle if it is seeing vacuum
90 GT stock needing some minor work, traded my 87 Vert to my bro for it.
2004 RAM 1500 Quad Cab Hemi DD Gonna be up for sale soon
86 Notch New Project
well its not much vacuum, i dont think its even enough to open the valve, doesnt look like its opening...
but should it have vacuum at all or not? if it has a little will that still cause it to run like crap?
Fox/n.
1. wild animal : a carnivorous animal of the dog family that has a sturdy square body, large cubic inches, a wide RPM range , and comes in many colors. Foxes are found throughout most of the world and hunt alone, mainly at night, relying on cunning and an acute sense of power and acceleration. They feed on mostly small rodents like rats(BBC) , mice (SBC) and snakes(Cobras).
Hmm. I'm having a new problem with hanging idle & missing at part-throttle. I wonder if my EGR is bad.
2015 GTPP
If yo follow that vaccum line back, it should go to one of the soleniods on the back side of the strut tower, these should only open when they get signal from the ecu, if you have vaccum at the egr at idle, then the soleniod is bad..
2015 A6 Mustang GT that so far has gone 9.48@147 but still the fastest prochargerd S550 in the world aside from Tim Essick's!
www.Rodeheavershotrod.com
ok well i just drove it with the vacuum line plugged, and when cold it sounded really weird when moving out of the exhaust, like a miss or something, (thats usually when if i get on it, it will hesitate and studder) if i stayed off the throttle about 1/4 it was fine, but at about 1/2 throttle it really studdered/popped, but again at WOT it pulled very hard.
Usually it pops/studders the whole time when cold. so what do you guys think? the problem isent the EGR?
Fox/n.
1. wild animal : a carnivorous animal of the dog family that has a sturdy square body, large cubic inches, a wide RPM range , and comes in many colors. Foxes are found throughout most of the world and hunt alone, mainly at night, relying on cunning and an acute sense of power and acceleration. They feed on mostly small rodents like rats(BBC) , mice (SBC) and snakes(Cobras).
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